rMBP fans screaming, System using 45-60% CPU...

Something, (I'm guessing Chrome, based on the huge list of "bootstrap" error messages in Console) crashed my MBP when I put it to sleep. Restarted it, and the fans started running full blast... no apps open. Open, then close Chrome - no effect on CPU usage or fan speed. Put it to sleep again, fans turn off. Wake up, fans spin up, and CPU still showing ~50% usage from "System." Restart, same thing. Restart again, and now it seems fine. Any ideas what's happening?

Chrome is a beast. I happened to be watching the process window this afternoon and chrome had 80 threads going. In addition to the 80 threads it had a series of other "render" processes running as well. A beast for sure.

Done. What am I looking for here? Now it's all normal (screenshots were taken after opening Chrome, obvi)... but I just had another incident where the rMBP wouldn't wake from sleep. I hate to force a restart. This time Chrome wasn't running when I put it to sleep, and there are no Chrome error messages in the console.

Could it have anything to do with it going to sleep while connected to a Cinema display (non TB aluminum one)?

Also, use the Activity Monitor to determine the processes utilizing the CPU as indicated by other posters.

Click to expand...

What I meant was: that time it seemed to be Chrome. But I just had a similar failure to wake from sleep, necessitating a forced restart, which appeared to be totally unrelated to Chrome (it wasn't running at all, and no evidence of it in Console or Activity Monitor.)

Done. What am I looking for here? Now it's all normal (screenshots were taken after opening Chrome, obvi)...

Click to expand...

There's nothing in your screen shots that indicates high demands on system resources. If you're visiting sites with Flash content, that could be a culprit. Generally speaking, Flash is notorious for consuming system resources, raising temps and decreasing battery life. For Flash-related issues:

Try using the YouTube HTML5 Video Player to watch YouTube videos, when available. (May impact fullscreen viewing. See link for details.) Some have reported better performance with HTML5, while some have reported worse. Try it and find out what works best for you.

I just had another incident where the rMBP wouldn't wake from sleep. I hate to force a restart. This time Chrome wasn't running when I put it to sleep, and there are no Chrome error messages in the console.

Could it have anything to do with it going to sleep while connected to a Cinema display (non TB aluminum one)?

Click to expand...

It shouldn't have anything to do with the display. I've seen some threads on wake from sleep issues, but I don't recall the details. You might try searching the forums for "wake from sleep" and read a few of those threads, to see if any applies to your situation.

There's nothing in your screen shots that indicates high demands on system resources. If you're visiting sites with Flash content, that could be a culprit. Generally speaking, Flash is notorious for consuming system resources, raising temps and decreasing battery life. For Flash-related issues:

Try using the YouTube HTML5 Video Player to watch YouTube videos, when available. (May impact fullscreen viewing. See link for details.) Some have reported better performance with HTML5, while some have reported worse. Try it and find out what works best for you.

It shouldn't have anything to do with the display. I've seen some threads on wake from sleep issues, but I don't recall the details. You might try searching the forums for "wake from sleep" and read a few of those threads, to see if any applies to your situation.

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